Point to newer git-1.8.0_bin directory.

BUG=169945


Review URL: https://chromiumcodereview.appspot.com/12047061

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@178430 0039d316-1c4b-4281-b951-d872f2087c98

update_depot_tools

@@ -30,8 +30,8 @@ if [ -d "$base_dir/svn_bin" -a $MINGW = 0 ]; then
 fi
 
 GIT="git"
-if [ -d "$base_dir/git_bin" -a $MINGW = 0 ]; then
-  GIT="$base_dir/git_bin/bin/git.exe"
+if [ -d "$base_dir/git-1.8.0_bin" -a $MINGW = 0 ]; then
+  GIT="$base_dir/git-1.8.0_bin/bin/git.exe"
 fi
 
 # Test git and git --version.